Aastra 6731i User Manual page 62

Line Keys and Programmable Keys
Busy Lamp Field (BLF) Key
The BLF feature on the IP phones allows a specific extension to be monitored for state changes. BLF monitors the status
(busy or idle) of extensions on the IP phone.
Note:
The BLF setting is applicable to the Asterisk server only.
Example
A Supervisor configures BLFs on his phone for monitoring the status of a worker's phone use (busy or idle). When the
worker picks up his phone to make a call, a busy indicator on the Supervisor's phone shows that the worker's phone is in
use and busy.
On the 6731i, the busy and idle indicators are the LEDs next to each BLF key. The LED illuminates steady to indicate the
monitored line is off-hook or unregistered. The LED goes off when the line is idle.
You can set BLF on the programmable keys using the Aastra Web UI only. BLF is not configurable from the IP phone UI.
Note:
You can also use a BLF configured key to dial out. Contact your System Administrator for more information
Configuring a BLF Key
Aastra Web UI
Note:
Keys 5 and 6 (SAVE and DELETE keys) can be made configurable ONLY by your System Administrator.
1. Click on Operation->Programmable Keys.
2. Select from "Key 1" through "Key 8". (Keys 5 and 6 can be made configurable only by your system administrator.)
3. In the "Type" field, select BLF to apply to this key.
4. In the "Value" field, enter the phone number or extension you want to monitor.
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41-001387-00 Rev 00 – 01.2011